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29 Cards in this Set
- Front
- Back
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Accuracy |
How close a measured value is to the actual value |
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Algebraic expression |
An expression that has a variable |
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Constant |
A value that does not change |
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Conversion factor |
Two quantities that are equal but use different units |
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Corresponding angles |
Corresponding sides are in the same relative position |
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Corresponding sides |
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Cross products property |
Used to tell whether a ratio makes a proportion |
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Dimensional analysis |
A process that uses rates to convert measurements from one unit to another |
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Equation |
a statement that the values of two mathematical expressions are equal |
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Evaluate |
you have to substitute a number for each variable and perform the operations |
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Formula |
A group of mathematical symbols that Express a relationship or that are used to solve a problem |
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Identity |
An equation that is always true no matter what value is substituted for the variable |
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Indirect measurement |
Can solve a proportion involving similar triangles to find the length that us not easily measured |
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Literal equation |
An equation with variables represent known values |
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Numerical expression |
An expression that has a constant |
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Precision |
A property of measurement related to the unit of measure used |
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Proportion |
2 equivalent ratios |
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Rate |
A ratio that measures two different quantities |
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Ratio |
Comparing a first number to a second number by division |
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Scale |
A ratio between 2 sets of measurments |
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Scale drawing |
A drawing that shows a real object with accurate sizes reduced or enlarged by a certain amount |
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Scale factor |
If every dimension of a figure is multiplied by the same number, the multiplier is called the sclae factor |
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Scale model |
A drawing that shows a real object with accurate sizes reduced or enlarged by a certain amount |
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Similar figures |
Have exactly the same shape but not necessarily the same size |
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Solution of an equation |
Any and all values of the variables that satisfies an equation |
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Unit rate |
A rude with a second quantity of one unit |
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Variable |
A symbol used to show relationships between sets |
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Coefficient |
A number that is multiplied by a variable |
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Absolute value |
The distance a number is from 0 |
